CVE-2007-5940

feynmf.pl in feynmf 1.08, as used in TeXLive 2007, allows local users to overwrite arbitrary files and execute arbitrary code via a symlink attack on the feynmf$$.pl temporary file.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• http://bugs.gentoo.org/show_bug.cgi?id=198231
• http://osvdb.org/42397
• http://secunia.com/advisories/27737
• http://secunia.com/advisories/27739
• http://security.gentoo.org/glsa/glsa-200711-32.xml
• http://www.securityfocus.com/bid/26507
• http://www.vupen.com/english/advisories/2007/3974